Both are a hollow ball of cells
The blastula in sea star development is larger than the fertilized egg. As the zygote undergoes multiple rounds of cell division, it forms a hollow ball of cells called the blastula. This growth is accompanied by an increase in overall size.
One early developmental event suggesting frogs are more closely related to sea stars than either group is related to snails or worms is gastrulation. In both frogs and sea stars, gastrulation involves the formation of a blastopore that becomes the opening of the digestive tract, while this differs in snails and worms. Additionally, frogs and sea stars share radial cleavage during early cell divisions, unlike the spiral cleavage seen in snails and worms.
A sea cucumber is a Herbivore.
The water vascular system of a sea star can generate enough force to extend and retract tube feet for movement and feeding. The force is sufficient for the sea star to grip onto prey items and surfaces. The exact amount of force generated may vary depending on the species of sea star.
Sea stars are capable of both types of reproduction.
The blastula in sea star development is larger than the fertilized egg. As the zygote undergoes multiple rounds of cell division, it forms a hollow ball of cells called the blastula. This growth is accompanied by an increase in overall size.
Distribution of yolk cells.
The blastula is a single-layered ball with a fluid-filled cavity called the BLASTOCOEL in the middle (which the morula stage lacks). --Side note: The morula is a ball of cells about the same size as the original zygote and the large number of embryonic cells of the morula arrange themselves into a blastula, with the blastocoel in the middle.
Frogs are not adapted to live in saltwater.
Frogs can be found on every continent but Antarctica.
Frogs are not adapted to live in salt water.
Sea turtles are a type of reptile. Frogs, however, are not reptiles. Instead, frogs are amphibians.
A sea star is called a sea star simply because of where it lives (the sea) and what it looks like (a star), simple!
Some where on the 4 seas there are some golden frogs who like to jump out of the water. Try to shoot them in mid-air with your cannon I will tell how many are in each sea South Western sea: 2 frogs South Eastern sea: 2 frogs North Western sea: 2 frogs North Eastern sea: 1 frog Total amount: 7 frogs
they can breath
Frogs do not live in the sea, they require fresh water, such as ponds or swamps. They are amphibians, so that they live both on land and in the water.
no, a sea star is a vertebrate!